CN107355389A - Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts - Google Patents
Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts Download PDFInfo
- Publication number
- CN107355389A CN107355389A CN201710712755.8A CN201710712755A CN107355389A CN 107355389 A CN107355389 A CN 107355389A CN 201710712755 A CN201710712755 A CN 201710712755A CN 107355389 A CN107355389 A CN 107355389A
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- Prior art keywords
- bearing
- pump
- shaft
- impeller
- solar energy
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- 150000003839 salts Chemical class 0.000 title claims abstract description 72
- 239000007788 liquid Substances 0.000 title claims abstract description 50
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000013016 damping Methods 0.000 claims abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 66
- 229910052757 nitrogen Inorganic materials 0.000 claims description 33
- 238000003860 storage Methods 0.000 claims description 24
- 238000012856 packing Methods 0.000 claims description 13
- 239000012208 gear oil Substances 0.000 claims description 9
- 239000000411 inducer Substances 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 7
- -1 pump shaft Chemical class 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts, including pump shaft, the pump shaft is disposed with hydraulic part, support vibration-proof structure, fluid seal structure and bearing cooler from bottom to top；The front end of the hydraulic part is provided with suction casing, and the suction casing front end is provided with cascade type filter, and the end of the hydraulic part is provided with final stage blower inlet casing, and the end of the final stage blower inlet casing is connected with the support tube front end of the support vibration-proof structure；The support pipe end of the support vibration-proof structure is connected by flanged plate with the outlet section bottom of the fluid seal structure.Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, the center of being designed to go out manifold formula, ensure that thermal expansion is uniform under the condition of high temperature.The solutions such as reliable fluid proof design, rational radiator structure and the configuration of flange form expansion joint vibration damping, it is ensured that the safe, reliable, efficient operation of solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts, while meet property indices.
Description
Technical field
The present invention relates to a kind of solar energy industry equipment field, a kind of solar energy thermal-power-generating station cold heat fused salt storage tank system
With high-temperature long-shaft pump for liquid salts.
Background technology
In using fused salt as the solar energy thermal-power-generating station heating power island of heat-storage medium or heat transfer medium, fused salt storage tank configuration is melted
Salt pump is one of the most key equipment.Conveyed by pump for liquid salts and realize the alternating of fused salt liquid level between cold heat fused salt storage tank
Change, the needs of so as to meet heat accumulation or heat transfer.
The current conventional technical deficiency of pump for liquid salts：
First：Tower technology path maximum operation (service) temperature is 565 DEG C in power station, and conventional pump for liquid salts operating temperature highest
400 DEG C, it is used for the fields such as melamine plant, the aluminum oxide preparation of chemical industry.
Second：Power station with depth under fused salt pump liquid typically in 16m or so, and under conventional fused salt pump liquid depth within 5 meters,
Shafting is long to have potential safety hazard to steady operating.
3rd：Conventional fused salt pump configuration is API610VS4 forms, generally single-stage or both stage impellers, can not be met tower
The high-lift operating mode of heat dump.
4th：Power station addressing is generally northwest extremely frigid zones, and the frozen block problem of high-melting-point fused salt turns into pump for liquid salts and transported safely
Capable technological difficulties.
5th：Conventional pump for liquid salts generally use helixseal, and it is special for the security and device of power station pump for liquid salts
Property, helixseal is not competent.
6th：Power station addressing is mostly illumination aboundresources and drought area, therefore traditional water circulation bearing cooling dress
Put inapplicable such environment.
7th：Power station change in displacement caused by large-scale fused salt storage tank flange high temperature or vibration, will bring potential
Pump for liquid salts vibration fault.
8th：Power station considers the peak use rate of fused salt in fused salt storage tank, it is desirable to which pump is stable in low liquid level depth of immersion
Operating, fused salt pump suction performance thus may be caused to decline and cavitation phenomenons occurs.
The content of the invention
According to technical problem set forth above, and a kind of solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts is provided, to solve
Existing pump for liquid salts is technical, and shafting is long potential safety hazard to be present to steady operating, and helixseal is not sufficiently effective, and pump for liquid salts is easy
The shortcomings of producing vibration fault.The technological means that the present invention uses is as follows：
A kind of solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts, including pump shaft, the pump shaft are disposed with water from bottom to top
Power part, support vibration-proof structure, fluid seal structure and bearing cooler；The front end of the hydraulic part is provided with suction casing,
The suction casing front end is provided with cascade type filter, and the end of the hydraulic part is provided with final stage blower inlet casing, and the final stage is led
The end for flowing shell is connected with the support tube front end of the support vibration-proof structure；The support pipe end of the support vibration-proof structure
It is connected with the outlet section bottom of the fluid seal structure by flanged plate, is connected at the top of the outlet section by flanged plate
It is fixed with the support of bearing；Described bearing cooler is installed in the support of bearing.
Include as the preferred hydraulic part：Suction casing, impeller, impeller snap ring, blower inlet casing and slide bearing assembly；Institute
State impeller to be fixed on pump shaft by impeller key, and the impeller includes first stage impeller and at least one secondary impeller, makes institute
First stage impeller and at least one secondary impeller is stated to position step by step in pump shaft outer wall by impeller snap ring；The blower inlet casing includes chopped-off head
Blower inlet casing and at least one final stage blower inlet casing, shown chopped-off head blower inlet casing and at least one final stage blower inlet casing are correspondingly arranged in the head
On the outside of level impeller and at least one secondary impeller；Sliding bearing is set at the chopped-off head blower inlet casing and at least one final stage blower inlet casing
Component, the mating surface of the slide bearing assembly use spiral slot form, strengthen self-lubricating property.
As being preferably located by connecting between the chopped-off head blower inlet casing and at least one final stage blower inlet casing by flange seam, make head
Level impeller is matched with chopped-off head blower inlet casing and set, and secondary impeller is matched with final stage blower inlet casing and set.
The preferred suction casing is provided with inducer, the inducer is fixed on pump shaft by key, improves pumping
Enter performance；The impeller both sides are installed with impeller port ring, and blower inlet casing both sides are installed with housing choma.
Include as preferably described support vibration-proof structure：Pump bottom plate, storage tank flange, support tube, flange bellow expansion
Section and basis；On the basis of described pump plate outer side is fixed on, lower section is provided with storage tank flange, at the top of described storage tank flange and
The flange bellow expansion joint for damping is provided with the inside of pump bottom plate；The support tube is vertically arranged together by flanged plate
Support tube is connected, and support frame is provided with described support tube.
As the spindle mode that preferably described pump shaft is multistage, the multi stage pump being formed by fixedly connecting by spindle component
Axle.
Include as the preferred fluid seal structure：The support of bearing, packing seal, nitrogen inlet, drain pipe road, throat
Bushing, aerial drainage pipeline, outlet section, nitrogen separate cavities and heat-insulation layer；Nitrogen separate cavities, the nitrogen are provided with the outlet section
Separate cavities make this section of pump shaft isolate with the drain pipe road of outlet section, and described nitrogen separate cavities bottom is provided with throat bushing, institute
The throat bushing stated is installed on pump shaft outer wall；The nitrogen separate cavities top is connected with nitrogen inlet, and bottom is provided with leak-off pipe
Road, nitrogen separate cavities are made to be connected with storage tank；Packing seal is set at the top of described outlet section, and described packing seal is filled in pump
Between axle and flanged plate core bore, described support of bearing bottom is provided with heat-insulation layer.
Include as preferably described bearing cooler：Upper fan guard, upper fan, bearing housing, oilhole, gear oil jacket,
Air inducing groove, lower fan, lower fan guard, bearing holder (housing, cover) and bearing；Bearing housing is provided with by flanged plate in the support of bearing, institute
It is provided with bearing and bearing holder (housing, cover) in the bearing housing stated, described bearing is arranged at bearing holder (housing, cover) top, outside the bearing holder (housing, cover) bottom
Side is provided with gear oil jacket, the oilhole being provided with described bearing housing above connection bearing；Both sides above and below the bearing housing
Pump shaft on be separately installed with fan and lower fan, be separately installed with the outside of described upper fan and lower fan fan guard and
Lower fan guard.
It is angular contact ball bearing as preferably described bearing；It is machined with described bearing housing for increasing cooling surface
Long-pending air inducing groove.
High-temperature molten salt region as the preferred outlet section carries out circumference winding using ceramic fiber blanket, is cladded with moistureproof material
Material and sheet metal carry out tying up fixation.
Compared with prior art, solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, there is advantages below：
1st, solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, the front end of hydraulic part are provided with suction casing, inhale
Enter a section front end and be provided with cascade type filter, consider the peak use rate of fused salt in fused salt storage tank, promote generated energy to maximize, should
Depth of immersion of the Pump Suction Nozzle away from tank bottom is reduced as far as possible, and cascade type filter is set in suction casing side, prevented because sucking distance
It is too small and produce and be vortexed in flux and water, ensure that there is stable flow regime at suction inlet, it is special according further to specific operating mode
Point, efficient inducer is configured before considering intake impeller, intake performance is improved, meets low cavitation situation.
2nd, solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, chopped-off head blower inlet casing and at least one final stage water conservancy diversion
Slide bearing assembly is set at shell, and the mating surface of slide bearing assembly uses spiral slot form, for depth 16m or longer under liquid
Operating mode, the support of multiple spot sliding bearing is set between housing and vane rotor, and its sound surface of friction pair uses surface overlaying skill
Art, improve hardness and wearability.And its helicla flute form design, the condition of its sufficient lubrication is realized, in operation process, is rubbed
Secondary minim gap forms rigid liquid film, plays stable support function to whole rotor, ensures its safe and reliable operation.
3rd, solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, pump shaft is the spindle mode of multistage, by connecing
The multistage pump shaft that shaft assembly is formed by fixedly connecting, consider that fused salt crystallization situation, pump multistage coupling of shaft system mode are adopted during dismounting maintenance
Fixed with split type spindle component, improve convenient disassembly.
4th, solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, nitrogen separate cavities bottom are provided with throat's lining
Set, throat bushing are installed on pump shaft outer wall, and fluid sealing system uses backpitch throat bushing, controls fused salt leakage rate, reduces
Volumetric loss, is returned in storage tank by the fused salt of throat bushing along aerial drainage pipeline, and intracavitary is isolated between the runtime need to continue to inject
Isolation and the nitrogen of lubrication, keep fused salt and isolated from atmosphere, heat transfer of the heat to bearing side are reduced, in the effect of packing seal
Under, stable pressure chamber is formed in nitrogen separate cavities, really realizes fused salt zero leakage.
5th, solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, bearing holder (housing, cover) lower outside are provided with gear oil jacket,
The oilhole being provided with bearing housing above connection bearing；Bearing housing up and down both sides pump shaft on be separately installed with fan and
Lower fan, consider the particularity of power station addressing, the bearing cooler that design oil cooling and fan coolling are combined, substitute water circulation
Bearing cools down, and reduces water resource system consumption.Bearing cooler provides lubrication oil circulation power using bearing holder (housing, cover) rotation, promotes
Lubricating oil is promoted to bearing top, using the deadweight of lubricating oil, realizes bearing lubrication.Bearing side and grease chamber side have fan to match somebody with somebody
Put, bearing temperature rise is controlled in critical field and keeps stable state.
6th, solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, storage tank flange top and pump bottom plate inner side are set
There is the flange bellow expansion joint for damping, will effectively absorb power station with large-scale fused salt storage tank flange mounting surface due to height
Axially or radially displacement caused by temperature or vibration, flange bellow expansion joint periphery setting thermal insulating shell, drops in addition
Low-loss.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 is the partial enlarged drawing of hydraulic part of the present invention.
Fig. 3 is the partial enlarged drawing of fluid seal structure of the present invention.
Fig. 4 is the partial enlarged drawing of present invention support vibration-proof structure.
Fig. 5 is bearing cooler partial enlarged drawing of the present invention.
Wherein：1st, upper fan guard, 2, upper fan, 3, bearing housing, 4, oilhole, 5, gear oil jacket, 6, air inducing groove, 7, leeward
Fan, 8, the support of bearing, 9, packing seal, 10, nitrogen inlet, 11, drain pipe road, 12, pump bottom plate, 13, throat bushing, 14, storage
Tank flange, 15, support tube, 16, pump shaft, 17, final stage blower inlet casing, 18, impeller snap ring, 19, first stage impeller, 20, suction casing, 21,
Cascade type filter, 22, inducer, 23, impeller port ring, 24, housing choma, 25, chopped-off head blower inlet casing, 26, impeller key, 27, sliding
Moving axis bearing assembly, 28, spindle component, 29, support frame, 30, aerial drainage pipeline, 31, flange bellow expansion joint, 32, basis,
33rd, outlet section, 34, nitrogen separate cavities, 35, heat-insulation layer, 36, lower fan guard, 37, axle sleeve, 38, bearing.
Embodiment
As shown in Fig. 1 to Fig. 5, a kind of solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts, including pump shaft 16, the pump shaft 16 from
It is disposed with hydraulic part, support vibration-proof structure, fluid seal structure and bearing cooler upwards down；The hydraulic part
Front end be provided with suction casing 20, the front end of suction casing 20 is provided with cascade type filter 21, avoid porch produce backflow and
It is vortexed in water.The end of the hydraulic part is provided with final stage blower inlet casing 17, and the end of the final stage blower inlet casing 17 is the same as the support
The front end of support tube 15 of vibration-proof structure is connected；The end of support tube 15 of the support vibration-proof structure is by flanged plate with described
The bottom of outlet section 33 of fluid seal structure is connected, and the top of outlet section 33 is fixedly connected with bearing branch by flanged plate
Frame 8；Described bearing cooler is installed in the support of bearing 8.
The hydraulic part includes：Suction casing 20, impeller, impeller snap ring 18, blower inlet casing and slide bearing assembly 27；It is described
Impeller is fixed on pump shaft 16 by impeller key 26, and the impeller includes first stage impeller 19 and at least one secondary impeller,
The first stage impeller 19 and at least one secondary impeller is set to be positioned step by step in the outer wall of pump shaft 16 by impeller snap ring 18.
The blower inlet casing includes chopped-off head blower inlet casing 25 and at least one final stage blower inlet casing 17, shown chopped-off head blower inlet casing 25 and extremely
A few final stage blower inlet casing 17 is correspondingly arranged on the outside of the first stage impeller 19 and at least one secondary impeller；The chopped-off head water conservancy diversion
Slide bearing assembly 27 is set at shell 25 and at least one final stage blower inlet casing 17, and the mating surface of the slide bearing assembly 27 uses
Spiral slot form, strengthen self-lubricating property.For depth 16m under liquid or longer operating mode, the slip at multi-point support position under liquid
Bearing assembly 27 is using surface overlaying technology and the sufficient lubrication structure of spiral slot form.
It is located by connecting between the chopped-off head blower inlet casing 25 and at least one final stage blower inlet casing 17 by flange seam, makes chopped-off head leaf
Wheel 19 is matched with chopped-off head blower inlet casing 25 and set, and secondary impeller is matched with remaining final stage blower inlet casing 17 and set.
The suction casing 20 is provided with inducer 22, and the inducer 22 is fixed on pump shaft 16 by key, improves pumping
Enter performance.
The impeller both sides are installed with impeller port ring 23, and blower inlet casing both sides are installed with housing choma 24, make impeller port ring 23
Sound friction pair is formed with housing choma 24, volumetric loss is reduced by the minim gap between sound friction pair, in addition to whole
Individual rotor has certain supporting role.And pile-up welding hard alloy at the impeller port ring 23 and the clearance surface of housing choma 24,
Improve hardness and wearability.
The support vibration-proof structure includes：Pump bottom plate 12, storage tank flange 14, support tube 15, flange bellow expansion joint
31 and basic 32；The described outside of pump bottom plate 12 is fixed on basis 32, and lower section is provided with storage tank flange 14, described storage tank method
The top of orchid 14 and the inner side of pump bottom plate 12 are provided with the flange bellow expansion joint 31 for damping, realize vibration-damping function.
The support tube 15 is connected by flanged plate with the support tube 15 being vertically arranged, and is set in described support tube 15
It is fixed built in realization by welding to be equipped with support frame 29, support frame 29 and support tube 15, reduction axially engages dimensional discrepancy.
Described pump shaft 16 is the spindle mode of multistage, the multistage pump shaft being formed by fixedly connecting by spindle component 28.Pump
Multistage coupling of shaft system mode is fixed using split type spindle component, and spindle component 28 includes shaft sleeve, spindle snap ring, connecting key
Deng.
The fluid seal structure includes：The support of bearing 8, packing seal 9, nitrogen inlet 10, drain pipe road 11, throat's lining
Set 13, aerial drainage pipeline 30, outlet section 33, nitrogen separate cavities 34 and heat-insulation layer 35；Nitrogen isolation is provided with the outlet section 33
Chamber 34, the nitrogen separate cavities 34 make this section of pump shaft 16 isolate with the drain pipe road 11 of outlet section 33, described nitrogen separate cavities
34 bottoms are provided with throat bushing 13, and described throat bushing 13 is installed on the outer wall of pump shaft 16.
The top of nitrogen separate cavities 34 is connected with nitrogen inlet 10, and bottom is provided with aerial drainage pipeline 30, isolates nitrogen
Chamber 34 connects with storage tank, has been passed through by nitrogen inlet 10 and has pressed nitrogen to be isolated and lubricated.
The described top of outlet section 33 sets packing seal 9, and described packing seal 9 is filled in pump shaft 16 and flange plate core
Between hole, the described bottom of the support of bearing 8 is provided with heat-insulation layer 35.
The fluid seal structure of reliable design at the outlet section, including packing seal, nitrogen isolation and lubrication, double branch roads
Let out salt pipeline.Outlet section high-temperature molten salt region carries out circumference winding using ceramic fiber blanket, is cladded with barrier material and metal foil
Plate carries out tying up fixation.
Fused salt is divided into two parts in the opening position of throat bushing 13, and the overwhelming majority is discharged by drain pipe road 11, and only one is small
Part is returned in storage tank by throat bushing 13 along aerial drainage pipeline 30.
The top of outlet section 33 sets packing seal 9, keeps forming stable pressure span in nitrogen separate cavities 34.In filler
Sealing 9 sets heat-insulation layer 35 with the position of the support of bearing 8, further obstructs heat of high temperature and is transferred to bearing side.
Described bearing cooler includes：Upper fan guard 1, upper fan 2, bearing housing 3, oilhole 4, gear oil jacket 5, air inducing
Groove 6, lower fan 7, lower fan guard 36, bearing holder (housing, cover) 37 and bearing 38；Bearing housing is provided with by flanged plate in the support of bearing 8
Body 3, bearing 38 and bearing holder (housing, cover) 37 is provided with described bearing housing 3, described bearing 38 is arranged at the top of bearing holder (housing, cover) 37, institute
State the lower outside of bearing holder (housing, cover) 37 and be provided with gear oil jacket 5, the oilhole 4 of the top of connection bearing 38 is provided with described bearing housing 3.
Fan 2 and lower fan 7, described windward are separately installed with the pump shaft 16 of bearing housing both sides about 3
Fan 2 and the outside of lower fan 7 are separately installed with fan guard 1 and lower fan guard 36.
Described bearing 38 is angular contact ball bearing；It is machined with described bearing housing 3 for increasing film-cooled heat
Air inducing groove 6.
Pump drive end designs a pair of angular contact ball bearings and bears radial load and residual axial force.Rotated to be by bearing holder (housing, cover) 37
Peripheral lubrication oil provides power, and lifting lubricating oil is flow to above bearing 38 from oilhole 4, lubricates bearing, lubrication by Action of Gravity Field
Deep fat afterwards is dropped back into oil sump.Sucked again by bearing holder (housing, cover) 37 after being dropped in order to avoid deep fat, design gear oil jacket 5 forms isolated area
Domain, deep fat are exchanged heat with bearing housing 3.
Upper fan 2 produces air quantity alignment air inducing groove 6 and carries out pressure cooling, and upper fan guard 1 forms good cooled region, increases
Big heat exchange area.Lower fan 7 and lower fan guard 36 composition cooling system, are cooled down to the lubricating oil side in bearing housing.
Parts of bearings is between the support of bearing and outlet section, including bearing, fan, bearing housing, bearing gland etc., institute
State the unique bearing of parts of bearings configuration and put forward oil return line and the reliable double fan type of cooling.
The support tube 15 and the support frame 29 of inside are combined into one by way of welding, realize structural compactness,
Form support frame integral type.
Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, for the pump for liquid salts material that temperature in use is 565 DEG C
Material selection, mainly considers the factors such as corrosion-resistant, high temperature strength and high-temperature oxidation resistance.It should try one's best in addition and use thermal expansion system
The identical or close heat resisting steel of number, the influence of thermal expansion is balanced by material, prevents the irregular fever under high temperature from deforming in itself.
Heat resisting steel uses 347H stainless steels, there is preferable mechanical behavior under high temperature.It is stable mainly due to being added in the stainless steel
Change elemental niobium.The adhesion of niobium and carbon is more much better than than chromium, and they form compound N bC prior to chromium and carbon, avoid Cr23C6 life
Into the appearance with chromium depleted band, so as to avoid intercrystalline corrosion.
Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, structure are designed to API610VS1 forms, and its is main
Feature is vertical suspension type, center goes out flow structure, single-stage or multi-stage impeller configure, and can meet the high-lift operating mode of tower heat dump,
And other performance indications of VS1 forms are better than VS4 forms.
Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention, the outlet section high-temperature molten salt region is using ceramics
Tapetum fibrosum carries out circumference winding, and overcoating barrier material and sheet metal carry out tying up fixation, the frozen block for solving high-melting-point fused salt
Problem.Mainly focus on and effectively avoid the outer pump flow passage components of tank medium easily solidifies when environment temperature reduces, shafting generation
Frozen block.
For the handling characteristics of solar energy thermal-power-generating station high-temperature long-shaft pump, it is technical not to efficiently solve conventional pump for liquid salts
Foot, has the characteristics that stable, safe and reliable, service life is long., being capable of large-scale promotion from the aspect of engineering reliability
Using.
The center of being designed to goes out manifold formula, ensures that thermal expansion is uniform under the condition of high temperature.It is reliable fluid proof design, rational
The solution such as radiator structure and the configuration of flange form expansion joint vibration damping, it is ensured that solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts is pacified
Entirely, reliably, Effec-tive Function, while meet property indices.Solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts of the present invention,
For solar energy thermal-power-generating station cold heat fused salt storage tank system pump.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts, it is characterised in that including pump shaft, the pump shaft is from bottom to top successively
It is provided with hydraulic part, support vibration-proof structure, fluid seal structure and bearing cooler；
The front end of the hydraulic part is provided with suction casing, and the suction casing front end is provided with cascade type filter, the waterpower portion
The end of part is provided with final stage blower inlet casing, and the end of the final stage blower inlet casing connects with the support tube front end of the support vibration-proof structure
It is fixed；
The support pipe end of the support vibration-proof structure is connected by flanged plate with the outlet section bottom of the fluid seal structure
It is fixed, the support of bearing is fixedly connected with by flanged plate at the top of the outlet section；
Described bearing cooler is installed in the support of bearing.
2. solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts according to claim 1, it is characterised in that：
The hydraulic part includes：Suction casing, impeller, impeller snap ring, blower inlet casing and slide bearing assembly；
The impeller is fixed on pump shaft by impeller key, and the impeller includes first stage impeller and at least one secondary leaf
Wheel, makes the first stage impeller and at least one secondary impeller be positioned step by step in pump shaft outer wall by impeller snap ring；
The blower inlet casing includes chopped-off head blower inlet casing and at least one final stage blower inlet casing, shown chopped-off head blower inlet casing and at least one final stage
Blower inlet casing is correspondingly arranged on the outside of the first stage impeller and at least one secondary impeller；
Slide bearing assembly is set at the chopped-off head blower inlet casing and at least one final stage blower inlet casing, and the slide bearing assembly is matched somebody with somebody
Conjunction face uses spiral slot form.
3. solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts according to claim 2, it is characterised in that：
It is located by connecting between the chopped-off head blower inlet casing and at least one final stage blower inlet casing by flange seam, makes the same chopped-off head of first stage impeller
Blower inlet casing matching is set, and secondary impeller is matched with remaining final stage blower inlet casing and set.
4. solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts according to claim 2, it is characterised in that：
The suction casing is provided with inducer, and the inducer is fixed on pump shaft by key；
The impeller both sides are installed with impeller port ring, and blower inlet casing both sides are installed with housing choma.
5. solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts according to claim 1, it is characterised in that：
The support vibration-proof structure includes：Pump bottom plate, storage tank flange, support tube, flange bellow expansion joint and basis；
On the basis of described pump plate outer side is fixed on, lower section is provided with storage tank flange, described storage tank flange top and pump bottom
The flange bellow expansion joint for damping is provided with the inside of plate；
The support tube is connected by flanged plate with the support tube being vertically arranged, and support is provided with described support tube
Frame.
6. solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts according to claim 1, it is characterised in that：
Described pump shaft is the spindle mode of multistage, the multistage pump shaft being formed by fixedly connecting by spindle component.
7. solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts according to claim 1, it is characterised in that：
The fluid seal structure includes：The support of bearing, packing seal, nitrogen inlet, drain pipe road, throat bushing, leak-off pipe
Road, outlet section, nitrogen separate cavities and heat-insulation layer；
Be provided with nitrogen separate cavities in the outlet section, the nitrogen separate cavities make this section of pump shaft with outlet section drain pipe road every
From described nitrogen separate cavities bottom is provided with throat bushing, and described throat bushing is installed on pump shaft outer wall；
The nitrogen separate cavities top is connected with nitrogen inlet, and bottom is provided with aerial drainage pipeline, nitrogen separate cavities is connected with storage tank
Connect；
Packing seal is set at the top of described outlet section, and described packing seal is filled between pump shaft and flanged plate core bore, institute
The support of bearing bottom stated is provided with heat-insulation layer.
8. solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts according to claim 1, it is characterised in that：
Described bearing cooler includes：Upper fan guard, upper fan, bearing housing, oilhole, gear oil jacket, air inducing groove, leeward
Fan, lower fan guard, bearing holder (housing, cover) and bearing；
Bearing housing is provided with by flanged plate in the support of bearing, bearing and bearing are provided with described bearing housing
Set, described bearing are arranged at bearing holder (housing, cover) top, and the bearing holder (housing, cover) lower outside is provided with gear oil jacket, in described bearing housing
The oilhole being provided with above connection bearing；
The bearing housing is separately installed with fan and lower fan, described upper fan and lower fan on the pump shaft of both sides up and down
Outside is separately installed with fan guard and lower fan guard.
9. solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts according to claim 9, it is characterised in that：
Described bearing is angular contact ball bearing；The air inducing groove for increasing film-cooled heat is machined with described bearing housing.
10. solar energy thermal-power-generating high-temperature long-shaft pump for liquid salts according to claim 1, it is characterised in that：
The high-temperature molten salt region of the outlet section carries out circumference winding using ceramic fiber blanket, is cladded with barrier material and metal foil
Plate carries out tying up fixation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710712755.8A CN107355389B (en) | 2017-08-18 | 2017-08-18 | Solar thermal power generation high-temperature long-axis molten salt pump |
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|---|---|---|---|
| CN201710712755.8A CN107355389B (en) | 2017-08-18 | 2017-08-18 | Solar thermal power generation high-temperature long-axis molten salt pump |
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| CN107355389A true CN107355389A (en) | 2017-11-17 |
| CN107355389B CN107355389B (en) | 2024-01-09 |
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|---|---|---|---|
| CN201710712755.8A Active CN107355389B (en) | 2017-08-18 | 2017-08-18 | Solar thermal power generation high-temperature long-axis molten salt pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108105144A (en) * | 2017-12-28 | 2018-06-01 | 四川省自贡工业泵有限责任公司 | Vertical long pump for liquid salts |
| CN108167195A (en) * | 2017-12-27 | 2018-06-15 | 中国科学院上海应用物理研究所 | A kind of superelevation temperature molten salt shaft seal pump |
| CN108386305A (en) * | 2018-04-13 | 2018-08-10 | 四川省自贡工业泵有限责任公司 | Tower photo-thermal energy storage molten salt hydraulic turbine power generator |
| CN108443172A (en) * | 2018-04-16 | 2018-08-24 | 江苏大学 | High-temperature melting salt pump shafting adjustable structure under a kind of long-shaft liquid |
| CN109114005A (en) * | 2018-10-30 | 2019-01-01 | 江苏双达泵业股份有限公司 | A kind of high temperature submerged pump |
| CN109139485A (en) * | 2018-10-30 | 2019-01-04 | 江苏双达泵业股份有限公司 | A kind of high-temperature long-shaft pump for liquid salts |
| CN109798247A (en) * | 2019-03-19 | 2019-05-24 | 江苏飞跃机泵集团有限公司 | A kind of long axis pump for liquid salts |
| CN109915414A (en) * | 2019-03-19 | 2019-06-21 | 江苏飞跃机泵集团有限公司 | A kind of effluent seat of pump for liquid salts |
| CN110145471A (en) * | 2019-05-14 | 2019-08-20 | 江苏飞跃机泵集团有限公司 | A kind of high-temperature melting salt pump compbined test detection device and test method |
| CN113090535A (en) * | 2021-04-25 | 2021-07-09 | 中国科学院上海应用物理研究所 | High-temperature medium pump particle-resistant slurry hydraulic device |
| CN113891992A (en) * | 2019-05-29 | 2022-01-04 | 流体处理有限责任公司 | Turbine without bearing |
| CN115076479A (en) * | 2022-06-15 | 2022-09-20 | 中国科学院上海应用物理研究所 | Flange self-sealing device for high-temperature molten salt environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108386305B (en) * | 2018-04-13 | 2024-06-25 | 四川省自贡工业泵有限责任公司 | Tower type photo-thermal energy storage molten salt hydraulic turbine power generation device |
| CN108443172A (en) * | 2018-04-16 | 2018-08-24 | 江苏大学 | High-temperature melting salt pump shafting adjustable structure under a kind of long-shaft liquid |
| CN109114005B (en) * | 2018-10-30 | 2024-02-13 | 江苏双达泵业股份有限公司 | High-temperature submerged pump |
| CN109114005A (en) * | 2018-10-30 | 2019-01-01 | 江苏双达泵业股份有限公司 | A kind of high temperature submerged pump |
| CN109139485A (en) * | 2018-10-30 | 2019-01-04 | 江苏双达泵业股份有限公司 | A kind of high-temperature long-shaft pump for liquid salts |
| CN109798247A (en) * | 2019-03-19 | 2019-05-24 | 江苏飞跃机泵集团有限公司 | A kind of long axis pump for liquid salts |
| CN109915414A (en) * | 2019-03-19 | 2019-06-21 | 江苏飞跃机泵集团有限公司 | A kind of effluent seat of pump for liquid salts |
| CN110145471A (en) * | 2019-05-14 | 2019-08-20 | 江苏飞跃机泵集团有限公司 | A kind of high-temperature melting salt pump compbined test detection device and test method |
| CN113891992A (en) * | 2019-05-29 | 2022-01-04 | 流体处理有限责任公司 | Turbine without bearing |
| US12078185B2 (en) | 2019-05-29 | 2024-09-03 | Fluid Handling Llc | Bearing-less turbine |
| CN113090535B (en) * | 2021-04-25 | 2022-09-27 | 中国科学院上海应用物理研究所 | High-temperature medium pump particle-resistant slurry hydraulic device |
| CN113090535A (en) * | 2021-04-25 | 2021-07-09 | 中国科学院上海应用物理研究所 | High-temperature medium pump particle-resistant slurry hydraulic device |
| CN115076479B (en) * | 2022-06-15 | 2023-09-19 | 中国科学院上海应用物理研究所 | Flange self-sealing device for high-temperature molten salt environment |
| CN115076479A (en) * | 2022-06-15 | 2022-09-20 | 中国科学院上海应用物理研究所 | Flange self-sealing device for high-temperature molten salt environment |
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